Upload file to database

UPLOAD FILE TO DATABASE

<form method="post" action="" enctype="multipart/form-data">
 Select file: <input type="file" name="f1">
 <input type="submit" name="sub" value="UPLOAD">
</form>
<?php
if(is_uploaded_file($_FILES['f1']['tmp_name'])){
 mysql_connect("localhost","root","");
 mysql_select_db("test");
 $cont = file_get_contents($_FILES['f1']['tmp_name']);
 $cont = addslashes($cont);
 if(mysql_query("insert tbl_images values ('','$cont')"))
  echo "Image added";
 else 
  echo "not";
}
?>

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Sessions Login Logout

<?php
if(isset($_POST['sub'])){
 $uname = $_POST['txtuname'];
 $pwd = $_POST['txtpwd'];

 if($uname=="scott" and $pwd=="scott123"){
  session_start();
  $_SESSION['aut'] = true;
  echo "<script>location='welcome.php';</script>";
 }
 else{
  echo "invalid";
 }
}
?>
<form method="post" action="">
Username:<input type="text" name="txtuname">
Password:<input type="password" name="txtpwd">
<input type="submit" name="sub" value="login">
</form>

WELCOME.PHP

<?php
session_start();
if(isset($_SESSION['aut'])){
 echo "Welcome to user";
}
else{
 echo "<script>location='login.php';</script>";
}
?>
<a href="logout.php">Logout</a><link rel="canonical" href="">

LOGOUT.PHP
<?php
session_start();
session_destroy();
echo "Logout successful";
?>

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File Upload in php

<form method="post" action="" enctype="multipart/form-data">
Select File: <input type="file" name="f1">
<input type="submit" name="sub" value="Upload">
</form>
<?php
if(is_uploaded_file($_FILES['f1']['tmp_name'])){
 $fname = $_FILES['f1']['name'];

 if(move_uploaded_file($_FILES['f1']['tmp_name'], "../testing/$fname"))
  echo "File moved";
 else
  echo "File not moved";
}
else
echo "File not uploaded";
?>

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